SC Project 4-1 Stainless steel full Exhaust System, with SC1-R Titanium Exhaust- Honda CB650R (19-20)

SC Project 4-1 Stainless steel full Exhaust System, with SC1-R Titanium Exhaust- Honda CB650R (19-20)

The SC Project 4-1 Stainless steel full Exhaust System, with SC1-R Titanium Exhaust- Honda CB650R (19-20) combines a complete 4-1 layout with a lightweight SC1-R titanium muffler. It uses SAE 304 stainless steel headers and a carbon fibre end cap. Moreover, the system includes a catalyst for Euro 4 homologation and remains street legal. Visit our website for more parts and accessories of Honda.

Complete 4-1 Exhaust System

This SC-Project system uses a 4-1 full exhaust configuration. It combines the stainless steel headers with the SC1-R titanium muffler.

SC-Project developed the system through research and development work with major MotoGP and SBK World Championship teams. Therefore, the design focuses on performance, fitment, and technical refinement.

SAE 304 Stainless Steel Headers

The headers use SAE 304 stainless steel. SC-Project uses pipes with variable dimensions to support performance throughout the exhaust system.

Furthermore, the variable-size pipes help increase performance across both torque and maximum power ranges. The system also accommodates the original lambda probe.

SC1-R Titanium Muffler

The system features the SC1-R muffler with a lightweight titanium body. Its sharp and defined lines give the Honda CB650R a distinctive sporty appearance.

The muffler also uses a carbon fibre end cap with a rhomboidal asymmetric shape. As a result, the SC1-R creates a recognizable finish that complements the CB650R.

Power and Torque Gains

The complete exhaust system delivers a claimed +1.9 hp at 11,500 rpm. It also provides +1.8 Nm of torque at 5,250 rpm.

Moreover, the variable-dimension headers support performance across the exhaust system’s operating range. This creates a balanced combination of maximum power and torque improvement.

Lightweight Construction

The complete SC-Project system weighs 6.3 kg, compared with 8.5 kg for the stock system. Therefore, it reduces weight by 2.2 kg.

This lighter construction can contribute to improved motorcycle rideability. Furthermore, the combination of stainless steel headers and a titanium muffler keeps the system focused on weight efficiency.

Hydroformed Outlet and Carbon Fibre End Cap

The SC1-R features a hydroformed outlet pipe. This manufacturing process creates its distinctive outlet shape.

In addition, the asymmetric carbon fibre end cap gives the muffler a sharp and modern appearance. The titanium body and carbon fibre finish create a premium contrast.

TIG Welding and CNC Bushings

SC-Project uses T.I.G. welding in the exhaust construction. The SC1-R also features CNC-machined insert bushings.

These bushings are turned from solid material to provide precise coupling between components. Therefore, the system achieves accurate fitting while maintaining its technical finish.

Lambda Probe Compatibility

The system supports the original lambda probe. This allows the complete exhaust to retain the supplied lambda sensor configuration.

Moreover, SC-Project designed the system around precise component integration. This helps maintain a clean and organized installation.

Euro 4 Street Legal Approval

The exhaust has EC/ECE type approval and is street legal. It also complies with Euro 4 requirements.

A type approval certificate is included. In addition, the system includes a catalyst for Euro 4 homologation.

Therefore, this complete exhaust combines its performance-focused construction with approved road-use specifications.

dB-Killer and Mounting

The system includes a dB-killer and uses a dedicated mounting bracket. These components form part of the complete 4-1 exhaust configuration.

Furthermore, the SC1-R’s sound-absorbing material can withstand very high temperatures. This supports the muffler’s technical construction.

Final Overview

The SC Project 4-1 Stainless steel full Exhaust System, with SC1-R Titanium Exhaust- Honda CB650R (19-20) combines SAE 304 stainless steel headers with a titanium SC1-R muffler. It delivers +1.9 hp and +1.8 Nm, while reducing system weight by 2.2 kg.

Moreover, the hydroformed outlet, carbon fibre end cap, TIG welding, CNC bushings, original lambda probe compatibility, and Euro 4 catalyst create a complete and refined setup. With EC/ECE approval, street-legal certification, and a dB-killer, this system provides a road-approved full exhaust upgrade for the Honda CB650R.

Weight	6 kg
Dimensions	55 × 25 × 20 cm
Preferred Finish	Carbon Fiber, Titanium
Country of Origin	Italy